Aria-24
ipe
Digital Key Telephone System
Installation Manual
Issue 1.5
Aria Technologies
51
3.5.7 PLLU Aria-24/A
ipe
(Phase Locked Loop Unit)
Description
PLLU provides system clock, 32MHz, phase locked to BRI line to system clock generation circuits.
When STIB is installed on the MBU, PLLU must be installed for clock synchronization.
PLLU should be installed on the „PLLU‟ connectors.
The LED function
No.
Function
Remark
LED1
The status of PLL ( ON : ACT, OFF : INACT )
3.5.8
PLLU Aria-24/D
ipe
(Phase Locked Loop Unit)
PLLU provides system clock, 32MHz, phase locked to BRI line to system clock generation circuits.
PLLU module is not required in the Aria-24/D it is onboard the MBUB
